I, a Novice, Am Actually Being Taken over by the Most Powerful Witch?

[Revenge] + [Western Fantasy] + [Non-System] + [Humanity] + [Decisive Killing] + [Magic] + [Elf] In order to fulfill the agreement with his childhood sweetheart, Wang Cheng abstained from sex for 20 years and won the fighting competition championship. However, he was betrayed by his good brother and shot to death. After traveling through time and becoming a magician, he was actually possessed by the most powerful witch in this medieval-style continent. He secretly vowed to become the most powerful magician, and he would repay those who had hurt him tenfold! Ferocious werewolf The bloodthirsty baron beautiful elf Troubled red-haired witch evil goblin grand magic academy Why is human nature always so selfish, indifferent, and cruel? Those beasts that are not worthy of being called humans, come and challenge me. Now, I give you a chance to kill me!